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LN-23P
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F-5 F-5
TROUBLESHOOTING AND REPAIR
FEEDING PROBLEMS (cont.)
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely,
contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed.
Call 1-888-935-3877.
CAUTION
Drive rolls turn but wire does not
feed or feed is erratic.
1. Gun cable is excessively bent or
is dirty.
2. Weld wire tangled or binding in
wire reel enclosure.
3. Worn drive rolls.
4. Improper drive roll tension.
1. Straighten gun and clean if nec-
essary. Perform Gun Test.
2. Open Cannister and if neces-
sary cut and reload wire.
3. Reverse or replace. Refer to
Section D.
4. Reset tension . Refer to Section
D.
Improper speed control.
1.Defective potentiometer, Control
Board or motor.
1. Perform Potentiometer Test,
Wire Feeder Test and Feed
Head Test.
Erratic arc action. 1. Incorrect speed or voltage set-
ting.
2. Worn contact tip.
3. Poor connections in weld circuit
or weld cables too small.
1. Check procedures.
2. Replace.
3. Repair or replace weld cables
OUTPUT PROBLEMS
Cannot obtain desired voltage.
1. Power Source defective or set
improperly.
2. Defective control cable from LN-
23P to Adapter or from Adapter
to power source.
3. Defective voltage control rheo-
stat.
4. Defective K350 Adapter
1. Make sure power source is set
for remote control and CV mode.
NOTE: SAM 400 & 650 CV con-
trols will always affect the
output voltage.
2. Check continuity of voltage con-
trol circuit, leads 75,76,&77
(A,B,&C) from feeder to power
source.
3. Perform Potentiometer Test.
4. See the K350 Adapter test